johnston



(M0de1.) a Sheet.s--Sheet 1 S. JOHNSTON. Grain Binder. No. 239,048.Patented March 22,1881.

(ModeL) a Sheets-Sheet 2.

S. J 0 H N S T 0 N.

. Grain'B'inder. No. 239,048. Patented MarchQZ, I881.

(ModelQ) 3 Sheets-Sheet 3.

s. JOHNSTON. Gram Blnder No. 239,048. 1 Patehted March 22,1881.

9 Xnv enior Ii M UNITED STATES PATENT OFFICE.

SAMUEL JOHNSTON, OF BROOKPORT, NEW YORK.

GRAIN-BINDER.

SPECIFICATION forming part of Letters Patent No. 239,048, dated March22, 1881.

Application 1116a May 10, 1880. (ModeL) To all whom it may concern Be itknown that I, SAMUEL JOHNSTON, of Brockport, in the county of Monroe andState of New York, have invented an Improvement in Grain-Binders, ofwhich the following is a specification.

My invention relates to grain-binding harvesters in general, but moreparticularly to the harvesters patented by me bearin g date of De cember16, 1879, and numbered 222,632 and 222,633 and it consists in theconstruction, arrangemen t, and operation of certain mechanism wherebythe ends of the binding-cord are tied and the gavel bound, and whichimprovements are fully and clearly set forth in the specification andreferred to in the appended claims.

In the drawings, Figure 1 is a perspective view of my improved bindingmechanism whereby the knot is tied. Fig. 2 is a plan of same with thebinding-frame taken away. Fig. 3 is a side elevation of same. Fig.4 is aperspeotive view of the knot-tying mechanism proper. Figs. 5 to 8,inclusive, show various positions of the looper and stages of the knot.Fig. 9 is a plan View of the holder and knife.

Ais the binding-frame, which is rotated horizontally upon its axis B inthe direction of the arrow. The end of the frame A is provided with twoguides, B and B the guide B lapping under B thereby causing the cord tobe thrown over the looper hook or jaws, as shown in Figs. 2, 3, and 5.The guide B has a downwardly-projecting piece, I), which guides the cordup to the looper.

Lil

- The eord-holder is constructed as follows: Pivoted at c, and workingin bearings, is a bell-crank, O, carrying on the lower arm orheel-extension a ball-roller, U and upon the other arm a curved piece,0, which is grooved vertically. Situated directly in front of it is aspring, D, provided with lingers d, which rest in the grooves of thecurved piece 0. The arm of the bell-crank is projected slightly beyondthe part0, as shown at c, Fig. 3, the object of which is to carry thebindingcord up between the two parts of the holder. The projecting side0, next to the looper, forms, with the edge piece, E, a shearingcord-cutter. This is shown in Figs. 4, 7 and 8.

Situated between the holder and guides is the looper F, which consistsof two hooks or jaws held tightly together. These jaws, in theirrotation,form a loop in the cords between the gavel and holder, and thenopen, take the cords next to the holder between them, and. after suchcords have been severed by the cutter E c, draw the ends through theloop, and thereby make the knot. This is shown in Figs. 4, 5, 6, 7, and8. The jaw fis attached to the shaft G, which rotates in bearings g g,and carries a bevel-wheel, G, upon the end opposite to the looper F. Thejaw f is secured to a sliding piece, H, which tits in a groove on theshaft G, the end projecting and in contact with the spring I, whichalways tends to force the piece H toward the looper F, thereby keepingthe jaws f and f closed, unless opened by some opposing torce. The pieceH carries a roller, H, which, during the rotation of the looper in theact of forming the loop, strikes the camdog J and opens the jaws ff, soas to take the cord between them, as shown in Figs. 4 and 7. The momentit passes the dog J the spring I, which is secured to the frame A, comesinto play, closing the jaws tightly upon the cord. The ends are nowsevered by the cutter E c, the looper rotates in the opposite direction,and when the roller H strikes the incline j of the dogJ said dog ispressed out, allowing the roller to pass to its original positionwithout opening the jaws. As soon as the roller has passed the dog thespring J forces it back again against the pin j. When the loop is formedas just described. and the ends of the cords are between the jaws andbeing drawn toward said loop, the loop is pushed off and held above thelooper by the finger a, while the jaws draw the ends of the cordsthrough the loop, as shown in Fig. 8.

Pivoted to the binding-frame at K is a segmental cam-piece, L, whichcarries a cam-slot, L, and a rack, L It is also provided with an arm,is, by which it is oscillated. The rack L meshes with the bevel-pinion Gand causes the rotation of the looper F, first in one direction and thenin the other. The part I of the cam-slot L causes the cord to be thrownup into the holder, as shown in Figs. 4, 5, 6, and 7. The part betweenland l holds it there while the loop is being made and the ends caughtbetween the jaws f f. The part 1 then comes into play and causes thepart c,

carrying the cords, to pass the shear-blade E and sever the cords,leaving the ends between the jaws.

Situated near the axis B is a cam-piece, M, working upon a pin, N, andwhich is oscillated during the movement of the binding-frame by therollers M and M striking the fixed cams T, T, and U. The cam-piece Mcarries a crankpin, m, and a cam-slot, m. The pin m is connected to thearm k by a connecting-bar, 0. Working in the slot m is an anti-frictionroller, p, upon the pin which connects the bars P and P. The bar P isconnected to an arm, Q, which is attached to and forms part of thebinding-frame A. The bar 1? is connected to a bell-crank, R, oscillatingupon a fulcrum at "r, and carrying a spring-arm, It, which is providedwith a horizontal arm, S, for the purpose of carrying the cords betweenthe guides B B and over the looper, and then holding them firmly buttedagainst the frame A, so that no cord shall be withdrawn from the hundleduring the tying of the knot. This is shown in Figs. 5, 6, and 7.

The operation is as follows: The end of the cord is placed between thespring-fingers d and grooved arm 0. It is then carried around the bundleby the band-carrying arm V, passed between the guides B and B by the armS, and again placed in the holder by the bandcarrying arm. As the frameA rotates in the direction indicated by the arrow the roller M strikesthe cam T, oscillating the cam-piece M and causing the roller p totravel toward the pin N, thereby quickly throwing the cords over thelooper and holding them there by the piece S, as shown in Fig. 5. As theframe moves on, the pin m is drawn back, thereby oscillating thesegmental cam-piece L, which, in turn, rotates the looper, making theloop, as shown in Fig. 6. During the formation of the loop the cord isdrawn up into the holder, as before explained. The rotation of the frameA still continuing, the loop is formed, and the roller H, striking thecam-dog J, opens the jaws ff, between which the cords pass, as shown inFigs. 4 and 7. The jaws then close upon the cords, and at this instantthe part l of the cam-slot in the segmental cam-piece L comes into play,and the cord is severed by the cutter E c. The roller M has now passedthe end of the cam T, and as the frame A still rotates, the roller Mstrikes cam T, causing the cam Mto oscillate in an opposite direction,

thereby rotating the looper also in an opposite As this takes place thelooper is rotated, and

the loop being brushed off and caught by the finger a, the ends of thecords are drawn through said loop, as shown in Fig. 8. As

the rotation of the frame A is continued still further, theband-carrying arm is raised and all the parts return to their originalposition. The bundle is discharged from the platform, and as the ends ofthe binding-cord are still held between the jaws, the knot is tightenedand the ends dragged from the jaws. The machine is then ready foranother gavel.

Having now described my invention, what I claim as new, and desire tosecure by Letters Patent, is

1. The combination, with a cord-knotter, of a cord-clamp and acord-holder, placed one on either side of the knotter, and operatingmechanism by which the cord is positively and immovably clamped and heldwith slack or sag between the two clamping-points at the commencement ofthe knotting action.

2. The combination of a rotary reciprocating cord knotter with a movableswitch, whereby one jaw is opened away from the other in the forwardrotation of the knotter, but allowed to pass without being actuated uponthe return movement.

3. A rotary reciprocating cord-knotter composed of two jaws, one ofwhich is adapted to move to and from the other, in combination with aspring bearing upon the movable jaw to hold it against the other, and aswitch or latch, which acts against a projection upon the movable jaw inthe forward rotation of the knotter, to cause it to open and receive thecord, but yield to the projection without actuating the jaw in thereturn rotation.

4. The combination of a rotary reciprocating cord-knotter with aspring-clearer, which yields to the cord in the forward rotation of theknotter, but strips it therefrom in the return movement.

5. In combination with a stationary holder and cutter, a rotaryreciprocating cord-knotter and operating mechanism, by which the jaws ofthe knotter are brought by the forward rotation up to the cutter andholder justbefore the cord is cut, to seize the ends of the cord, andthen retracted by the return rotation to draw them through the loop.

6. The pivoted cord-holder having a working face concentric with itspivot and a heelextension, in combination with the vibrating plateprovided with the cam-slot, substantially as and for the purpose setforth.

7. In combination with the pivoted cord holder and cutter, the camacting upon a heel projecting therefrom, and so shaped as to impart twodistinct onward movements thereto, the first to seize the cord and holdit while it is being looped and the second to sever it.

In testimony of which invention I hereunto set my hand.

SAMUEL JOHNSTON.

Witnesses:

JOHN H. KINGSBURY, .NoR'roN MINOT.

